Answer:
a) velocity v = 322.5m/s
b) time t = 19.27s
Explanation:
Note that;
ads = vdv
where
a is acceleration
s is distance
v is velocity
Given;
a = 6 + 0.02s
so,
Remember that
substituting s = 2km =2000m, into equation 1
v = 322.5m/s
substituting s = 2000m into equation 2
t = 19.27s
Answer:
The kinetic energy of the merry-go-round is .
Explanation:
Given:
Weight of the merry-go-round,
Radius of the merry-go-round,
the force on the merry-go-round,
Acceleration due to gravity,
Time given,
Mass of the merry-go-round is given by
Moment of inertial of the merry-go-round is given by
Torque on the merry-go-round is given by
The angular acceleration is given by
The angular velocity is given by
The kinetic energy of the merry-go-round is given by